Dr Rinsler replies as follows

. 1981 Oct;34(10):1191.

PMCID: PMC494392

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

Rinsler M. G. Spectroscopy, colorimetry, and biological chemistry in the nineteenth century. J Clin Pathol. 1981 Mar;34(3):287–291. doi: 10.1136/jcp.34.3.287. [DOI] [PMC free article] [PubMed] [Google Scholar]